console.log("百度地图，配置初始化");
//需要引入 proj4.js 和 proj4leaflet.js 插件，使用script标签引入的方式
L.CRS.Baidu = new L.Proj.CRS('EPSG:900913', '+proj=merc +a=6378206 +b=6356584.314245179 +lat_ts=0.0 +lon_0=0.0 +x_0=0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs', {
  resolutions: function () {
    var level = 19;
    var res = [];
    res[0] = Math.pow(2, 18);
    for (var i = 1; i < level; i++) {
      res[i] = Math.pow(2, (18 - i))
    }
    return res;
  }(),
  origin: [0, 0],
  bounds: L.bounds([20037508.342789244, 0], [0, 20037508.342789244])
});

L.tileLayer.baidu = function (option) {
  option = option || {};

  var layer;
  var subdomains = '0123456789';
  switch (option.layer) {
    case "vec":// "百度地图"
    default:
      //'http://online{s}.map.bdimg.com/tile/?qt=tile&x={x}&y={y}&z={z}&styles=pl&b=0&limit=60&scaler=1&udt=20170525'
      layer = L.tileLayer('http://online{s}.map.bdimg.com/onlinelabel/?qt=tile&x={x}&y={y}&z={z}&styles=' + (option.bigfont ? 'ph' : 'pl') + '&scaler=1&p=1', {
        name:option.name,subdomains: subdomains, tms: true
      });
      break;
    case "img_d"://"百度卫星"
      layer = L.tileLayer('http://shangetu{s}.map.bdimg.com/it/u=x={x};y={y};z={z};v=009;type=sate&fm=46', {
        name: option.name, subdomains: subdomains, tms: true
      });
      break;
    case "img_z"://"注记"
      layer = L.tileLayer('http://online{s}.map.bdimg.com/tile/?qt=tile&x={x}&y={y}&z={z}&styles=' + (option.bigfont ? 'sh' : 'sl') + '&v=020', {
        name: option.name, subdomains: subdomains, tms: true
      });
      break;

    case "custom"://各种自定义样式
      //customid默认样式：dark,midnight,grayscale,hardedge,light,redalert,googlelite,grassgreen,pink,darkgreen,bluish
      //styles：自己编辑的样式
      option.customid = option.customid || 'midnight';
      if (option.styles){
        layer = L.tileLayer("http://api{s}.map.bdimg.com/customimage/tile?&x={x}&y={y}&z={z}&scale=1&styles=" + option.styles, {
        // layer = L.tileLayer("https://api.map.baidu.com/customimage/tile?&x={x}&y={y}&z={z}&scale=1&styles=" + option.styles, {
          name: option.name, subdomains: "012", tms: true
        });
      }else if (option.customid){
        layer = L.tileLayer('http://api{s}.map.bdimg.com/customimage/tile?&x={x}&y={y}&z={z}&scale=1&customid=' + option.customid, {
          name: option.name, subdomains: "012", tms: true
        });
      }
      break;
    case "time"://实时路况
      var time = new Date().getTime();
      layer = L.tileLayer('http://its.map.baidu.com:8002/traffic/TrafficTileService?x={x}&y={y}&level={z}&time=' + time + '&label=web2D&v=017', {
        name: option.name, subdomains: subdomains, tms: true
      });
      break;
    //合并 "百度卫星" + "注记"
    case "img":
      layer = L.layerGroup([
        L.tileLayer.baidu({ name: "底图", layer: 'img_d', bigfont: option.bigfont }),
        L.tileLayer.baidu({ name: "注记", layer: 'img_z', bigfont: option.bigfont })
      ]);
      break;
  }
  return layer;
};


